Pyrometallurgy (Leaving Cert Engineering): Quizzes
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12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is pyrometallurgy?
What is pyrometallurgy?
A high-temp process to extract metals
What is gangue in pyrometallurgy?
What is gangue in pyrometallurgy?
Unwanted materials separated from metals
What temperature range is typically used in pyrometallurgical processes?
What temperature range is typically used in pyrometallurgical processes?
500-2000°C
Why do high temperatures accelerate pyrometallurgical reactions?
Why do high temperatures accelerate pyrometallurgical reactions?
They dramatically speed up reaction rates
What is an autogenous pyrometallurgical process?
What is an autogenous pyrometallurgical process?
One sustained by exothermic reactions
What does calcining involve?
What does calcining involve?
Thermal decomposition by heating
What is the most common type of roasting?
What is the most common type of roasting?
Oxidation of metal sulfide ores
What occurs in dead roasting?
What occurs in dead roasting?
Complete oxidation with excess oxygen
What acts as the reducing agent in smelting?
What acts as the reducing agent in smelting?
Coke or charcoal (carbon sources)
What distinguishes smelting from other pyrometallurgical processes?
What distinguishes smelting from other pyrometallurgical processes?
It produces liquid metal phase
Which metals are commonly extracted using pyrometallurgy?
Which metals are commonly extracted using pyrometallurgy?
Iron, copper, zinc, chromium, tin
Why is pyrometallurgy preferred for large-scale industrial production?
Why is pyrometallurgy preferred for large-scale industrial production?
It's cheaper and suits large quantities